US3256837A - Bulkheading material - Google Patents

Description

June 2l, 1966 D. H. BLATT 3,256,837

BULKHEADING MATERIAL Filed NOV. 3, 1964 4 Sheets-Sheet l I N VENTOR.

. DAvm H. BLATT Wm A T TonnJEY June 21, 1966 D. H. BLATT 3,256,837

BULKHEADING MATERIAL Filed Nov. 5, 1964 4 Sheets-Sheet 2 H. BLATT 3,256,837

BULKHEADING MATERIAL June 21, 1966 Filed NOV. 3, 1964 4 SheebS-Sheel'I 5 -n-JB INVENTOR. BY DAW@ H BLATT A'rmmes/ June 21, 1966 D. H. BLATT 3,256,837

BULKHEADING MATERIAL Filed Nov. 3, 1964 4 Sheets-Sheet 4 INVENTOR. DAvlD H. BLATT BY (f ATTORNEY United States Patent O 3,256,837 BULKHEADING MATERIAL David H. Blatt, Melrose Park, Pa., assignor, by mesne assignments, to Walnut Industries Company, a partnership, Philadelphia, Pa.

Filed Nov. 3, 1964, Ser. No. 408,589 9 Claims. (Cl. .10S- 376) This invention relates gentrally to bulkheading materials. More particularly, this invention relates to reinforced disposable paper panels which may be used as retaining members and closure doors for railroad box cars or trucks, or to provide quickly erectable bulkheads or partitions to segregate different areas of a storage chamber and to prevent load shifting in those cases where the storage chamber is mobile, such as within the interior of a truck body or of a railroad box car.

Briefly, the invention contemplates a laminated paper paneling structure including a plurality of spaced apart parallel extending non-metallic reinforcing tapes adhesively bonded into the structure between laminations thereof at spaced apart areas along the length of the tapes, with the tapes immediately underlying a plurality of regularly occurring spaced apart windows or openings cut through one of the paper laminations so as to expose a length of the non-metallic tape at spaced apart points along the tape length. The provision of these openings for exposing portions of the tape and the adhesive spot securement of the tape are very important and impart great versatility of use to the paper panelling.

In the past, bulkheading structures for use Within trucks or lrailroad car bodies have usually been timbers or steel banding straps nailed to the walls or interior car supports, or have been tarpaulins secured with heavy rope requiring the provision of anchoring structures such as rings or cleats on the walls or oors or ceilings of the truck or car. ln the case where the nailing procedures are used, the repeated installations of such barriers and subsequent removal thereof involving repeated nailings and nail removals eventually causes splintering of the walls or other anchoring surfaces into which the nails are driven. Consequently, the trucks or railroad cars must be periodically taken out of service so that these destroyed portions of the cars can be repaired either by replacement or by sheathing with new material. This is, of course, not only time consuming but is also expensive and is chargeable to maintenancecosts of the transportation vehicles. Bulkheading or barrier materials are also very frequently utilized for closing the door frame openings of trucks and railroad boxcars and are attended by similar problems with respect to door frame construction.

Interior bulkheading and door barriers installed in accordance with the principles of the present invention cornpletely eliminate the progressive destruction of the car due to the repeated nailings and thereby eliminates the need for repairs and the out of service time. Consequently, the operating overhead associated with these factors is disposed of and substantially annual revenue savings are realized.

Further, the present invention is of particular impor 4 tance in the bulkheading of goods in refrigerated railway cars, trucks and other carriers of products which require to be maintained in frozen or refrigerated conditions. The load-containing compartments of such carriers are lined with insulaitng material which if ruptured or pierced by nails or other devices for anchoring conventional bulkheading material in place would result in loss of refrigeration.

Having in mind the foregoing conditions, the present invention contemplates the provision of bulkheading material of such construction as enables it to be adhesively secured in position without destroying, damaging or otherwise deleteriously affecting the load-receiving compartment of the transport vehicle, the material being so constructed according to the present invention that the non-metallic flexible tapes which are bonded into it are themselves directly adhesively securable to their respective anchoring surfaces, such as the opposite side wall surfaces of a Iload-receiving combination or of a doorway opening which is required to be closed. 'I'he important desideratum considered from the standpoints of both the panelling structure itself and its adaptability for adhesive securement in position is that without destroying the integrity of the panelling adequate lengths of the tapes are adapted to be completely freed of overlying paper on the faces thereof which engage the wall surfaces of the loadreceiving compartment and so may be effectively bonded thereto. This is made possible by the provision of means in one of the paper laminations of the bulkheading material for exposing through said one lamination the requisite lengths of tapes for securely anchoring the panelling in position. By insuring the strong adhesive securement between the reinforcing tapes and the supporting wall structures, it will be understood that the load is substantially borne by the tapes and not basically by the paper laminations.

The disposable paper panelling made according to the invention may be made of any desired length and width and in a continuous piece so that the user may cut oli.D as much as is desired for a particular application and store the remainder for subsequent use. Thus, there is no need for the manufacturer to make, or the user to stock, a large number of different sized preformed panels to meet the requirements of different applications. Accordingly, it is a principal object of this invention to provide a novel paper panel structure having reinforcing nonmetallic tape laminated into the structure and adhesively spot secured thereto at spaced intervals along the tape length which means also provided at regular intervals along the tape length which make the tape readily accessible without requiring partial destruction of the panelling to gain access to the tape.

Another object of this invention is to provide a novel non-metallic tape reinforced paper panelling structure as aforesaid which can be compactly rolled up for shipping and storage, and which may be unrolled and cut to a particular length as needed for a desired application, the remainder of the roll being then storable for future use.

A further object of this invention is to provide a novel non-metallic tape reinforced paper panelling structure including a tear-back feature by means of whic-h desired lengths of the tape may be freed from the paper panelling to effect a securement.

Yet another object'of the invention is to provide a novel bulkheading material installable by a novel method of adhesive securement which permits the bulkheading material to be installed and removed with no attendant .cation in conjunction with an examination of the appended drawings, wherein:

FIGURE 1 illustrates in plan view one side of a length of the paper panelling according to the invention showing the laminated construction of the paper layers and nonmetallic tapes, with windows cut through the paper backing strip laminations to expose portions of the underlying tape which latter is adhesively spot secured to the main paper web;

FIGURE 2 is a cross-sectional view through the structure illustrated in FIGURE 1 as would be seen when viewed along the line 2--2 thereof, taken through the windowed region of the structure;

FIGURE 3 is a cross-sectional view through the structure illustrated in FIGURE l as would be seen when viewed along the line 3-3 of that figure, the section being taken through a non-windowed region of the structure;

FIGURE 4 is a cross-sectional View through the structure illustrated in FIGURE 1 as would be seen when viewed along the line 4 4 of that figure, this section being taken through a windowed region of the structure;

FIGURE 5 illustrates the paper panelling shown in FIGURES 1 to 3 formed into a convenient cylindrical roll for easy storage and handling;

FIGURE 6 illustrates an enlarged fragmentary perspective view of two pieces of paper panelling according to the invention disposed in end-overlapped relation through the windowed region with the tape ends lifted from the paper panelling and prior to Securement;

FIGURE 7 is an enlarged fragmentary perspective showing similar to that of FIGURE 6 excepting that the unsecured tape ends have been overlapped and clamped together by means of a seal;

FIGURES 8 through 14 correspond respectively to the showings of FIGURES 1 through 7 with respect to a modified form of the invention in which the windows are cut through the main paper web instead of through the paper backing strip laminations, and in which the tapes are adhesively spot secured to the paper backing strip laminations;

FIGURES l5 through 18 correspond respectively to the showings of FIGURES 1 through 4, and FIGURES 19 and 20 correspond respectively to the showings of FIGURES 6 and 7, with respect to a second modified form of the invention in which the elongated windows in the paper backing strip laminations of the first form of the invention are replaced by lune shaped openings spaced lengthwise along the tapes;

FIGURES 2l through 26 correspond respectively to the showings of FIGURES through 20 with respect to a third modified form of the invention in which the lune shaped openings are cut through the main paper web instead of through the paper backing laminations, and in which the tapes are adhesively spot secured to the paper backing strip laminations;

FIGURE 27 is a diagramatic plan view showing the interior of a truck body or similar mobile carrier illustrating the use of the novel bulkheading panel material according to the invention to secure a load and prevent shiftingof the same; and

FIGURE 28 illustrates in detail view the novel method according to the invention of adhesively securing the bulkheading panel material to the walls of the carrier.

In the several figures, like elements are denoted by like reference characters.

Turning now to an examination of the figures, consider first the showings of FIGURES 1 to 4 which illustrate the structural aspects of the flexible tape reinforced paper panelling. The panelling is generally designated as 30 and basically consists of a paper web or sheet 31, a plurality of paper backing strips 32 adhesively secured to-the web or sheet 31, and a plurality of non-metallic tapes 33 sandwiched between the web 31 and backing strips 32. The tapes are adhesively secured to the web 31 at spaced apart points along the lengths of the tapes by glue spots 34 as shown or by relatively thin lines of glue which may extend lengthwise of the tapes centered between the side edges thereof or transversely of the tapes at spaced intervals along their lengths. It will be understood that the term glue spots as employed throughout this specification is intended to embrace not only the discrete glue spots as shown but also any other desired glue disposition between the tapes and the irnperforate paper laminate as will effect only a partial bond between the tapes and the paper.

T he non-metallic tapes 33 may be of any desired construction and material having the requisite flexibility, tensile strength and lightness in weight, as, for example, woven fabric tapes, vWoven or unwoven plastic tapes or a weftless tape now commercially available made by securing a plurality of high tenacity rayon tire cords together in side by side relation. Securement of the tapes to the non-windowed or imperforate paper laminate is preferred for reasons which will be subsequently made clear. Where the tape is'of the type wherein the cords thereof are bonded together by a heat-sealable composition, the tape may be spot heat-sealed to the imperforate web as the paper panelling is being fabricated.

As best seen in FIGURES l, 2 and 4, the paper backing strips 32 are provided with a plurality of spaced apart windows or cutouts 35 located so as to overlie and register with the tapes 33, and to thus render spaced portions of the latter not only visible but also physically accessible therethrough. The paper panelling 30 may be readily fabircated with well-known paper combining machinery, the modifications to such equipment that are necessary being the provision of punch apparatus for knocking out the windows 35 in the backing strips 32 as they are fed from their supply rolls, and means for feeding the tapes 33 into the combining machinery properly positioned to provide for their registry with the windows 35 of the backing strips 32. The paper backing strips 32 are provided with glue margins separated by a glue freecentral band of width somewhat in excess of the width of the tapes 33. As a consequence, when the paper web 31, paper backing-strips 32 and tapes 33 are combined, the backing strips 32 are securely glued to the web 31 by the glue margins but are not glued to the tapes 33.

The tapes 33, as previously described, are partially bonded to the paper web 31 by the spaced apart glue spots 34. These glue spots-are chosen of sufficient size and frequency of occurrence to preclude separation of the tapes from the web when subjected to shearing stress, but to permit ready separation of the tapes from the web Without tearing through the web when the tapes are peeled back against the glue Securement. This is most readily accomplished by forming the glue bonds so that the glue of the spots 34 makes only a surface bond to the paper web and does not penetrate through the paper or deeply into the fibers thereof.

`The paper web 31, paper-backing strips 32 and tapes 33 are all continuously fed through the combining machine from large supply rolls and result in the production of a continuous length of panelling 30. As the panelling 30 is formed in its finished state it may be conveniently Wound upon a take-up roll until a predetermined continuous length thereof has been wound into the roll, whereupon it may be severed and a new roll started. The compact cylindrical rolls of panelling 30 so formed may then lbe secured from unwinding in any convenient fashion` for subsequent shipment and storage. A roll 36 of panelling 30 of the general type described and shown in FIGURES 1 to 4 is illustrated in the perspective view of FIGURE 5 with a portion of the panelling unrolled. It will of course be appreciated that the panelling 30 may :'be made of any desired width and-may have more or less of the tapes 33 secured thereto with the spacing between successive pairs of such tapes being either uniform or different as desired.

The reinforced paper panelling 30 may be used las a continuous retaining member by unrolling the requisite length of panelling from a roll such as 3 6 shown in FIGURE 5 and securing opposite ends of the panelling to the wall structure of the enclosure within which it is desired to confine variously packaged commodities, as for example within au end section of a railroad boxcar or truck body. The panelling may be conveniently secured to the enclosure walls by means of adhesive, staples or other securement means applied principally to the tapes 33, care being exercised to insure that the tapes 33 are properly anchored to absorb the load and to prevent the load Ibeing borne by the paper web 31 at the anchoring point.

In those cases in which it is desired to employ the panelling as a closure and retaining means, two pieces of the panelling `are utilized and are cut to be of sufficient length to `that when their remote ends are secured to the enclosure wall an overlap is provided at the meeting ends of the two pieces of panelling, such an overlap condition being shown in FIGURES 6 and 7. Further, it will be observed in the showings of FIGURES 6 and 7 that the panelling sections 30a and Sflb are cut so that their overlapped terminating ends pass through the windowed regions of the panelling. The absence of a paper penetrating glue securement of the tapes to the paper weJbs 31a and 31b prevents tearing of the webs when the tape ends are peeled back against the glue spot securements. The pannelling ends may be overlapped and the free ends of the tapes 33a and 33b may now be brought together and securely clamped `as by means of the seal 37 as shown in FIGURE 7. Typically, the windows 35 may be approximately three feet in length to provide a tape overlap of eighteen inches when the panelling is severed medially through a window.

If a greater panelling overlap than that shown in FIG- URES 6 and 7 is desired, the panelling sections 30a and 30h may be of course cut to be of longer length, and the lifted tape ends 33a and 33b of FIGURE 6 may lbe pulled back to tear back the backing strips 32 along the dashed lines 38 shown -in FIGURE l, these dashed lines 38 indicating the `side edges of the tapes 33. Since the tapes are not adhesively secured to the backing strips by virtue of the glue-free central lbands, it will beappreciated that there is no tendency for the torn back backingstrips portions to adhere to the tapes as the tapes are back-pulled, so that the tapes are free of any paper coating and can be tightly clamped together by the seal 37 without possibility of slippage. The significance of adhesive securement of the tape to only the imperforate panelling layer should now be clear since'it is the windowed layer which will be torn back when necessary and it is desired that the tapes be free of any paper coating.

Turning now to the showings of FIGURES 8 through 14, it is observed that the embodiment of the invention illustrated therein corresponds respectively to the showings of FIGURES l through 7 modified so that the windows 35 are cut through the main paper web 31' instead ofthrough the paper backing strip llaminations 32', and the flexible tapes 33 are adhesively spot secured as at 34' to the imperforate paper backing strip laminations 32 instead of to the main web. The glue coated marginal edges and glue free central band of the backing strip laminations 32 are. clearly seen in the showing of FIGURE 8 and are the same as previously described in connection with the showings of FIGURES 1 through 7 although this feature is not so clearly seen in the showing of the first embodiment as it is in the illustration of FIGURE 8. Apart from which laminate is provided with the windows, `the structure of FIGURES 8 through 14 is otherwise identical to that of the embodiment shown in FIGURES 1 through 7, and this is indicated by correspondingly numbered reference characters to which have lbeen affixed primes in the showings of FIGURES 8 through 14. For example, the paper web in FIGURE 8 is designated as 31 as compared to 31 in the showing of the first embodiment, and so on for the remaining reference characters.

Turning now to the showings of FIGURES through it will be observed that FIGURES 15 through 18 correspond respectively to the showings of FIGURES 1 through 4 and that FIGURES 19 and 2O correspond respectively to the showings of FIGURES 6 and 7 with respect to another modified form of the invention in which the elongated windows in the paper backing strip laminations of the first ,form of the invention have lbeen replaced by lune shaped openings spaced lengthwise along the tapes in transverse relation to a pair of longitudinally extending lines of slits. In the showings of FIG- IURES 15 through 20, parts corresponding to those shown in the first embodiment of the invention have been designated by the same reference numerals increased in magnitude by 100. Thus, the paper web 31 of FIGURE 1 is designated as 131 in FIGURE l5, the paper backing strips of FIGURE 1 are designated 32 while in FIGURE 15 they are designated as 132, the windows 35 of FIG- URE 1 have been replaced by the lune shaped openings and their associated lines of slits 140 in FIGURE l5, and so on for the remainder of the designated parts.

'It will lbe noted that in the embodiments of FIGURES 15 through 20, each pair of the parallel spaced apart lines of slits or perforations embrace therebetween the transversely extending lune shaped openings 135, the spacing between these lines of perforation 140 being somewhat greater than the width of the flexible tapes 133. The lune shaped openings 135 thus provide convenient means Ifor insertion of a finger between the tape 133 and perforated strip defined by the lines of perforation 140 so that this strip may be grasped between the thumb and finger and torn back along the lines of perforation for any desired length to expose and render accessible the underlying tapes 133. The torn back portions of the perforated strips are of course free of the underlying tape and may be torn transversely off of the panel as is best seen in the showing of FIGURE 19. The tapes 133 may be peeled back from their glue securement with the web 133 in the now well known manner', and may be secured either to support posts or to another overlapped portion of panelling in the manner shown in FIGURE 20.

FIGURES 21 through 26 bear the same relationship to FIGURES 15 through 20 as that which has already 'been described in connection with the showings of FIG- URES 8 through 14 as compared to FIGURES 1 through 7. That is, all of the elements shown in FIGURES l5 through 20 are also shown in FIGURES 21 through 26 and have been correspondingly designated 4by a primed notation, the sole difference between the showing of FIGURES 21 through 26 as compared to that of FIG- URES 15 through 20 being that the higher numbered figures illustrate a form of the invention in which the lune shaped openings 135 and associated parallel lines of perforation 140 are formed in the main paper web 131 instead of being formed in the paper backing strips 132. Accordingly, no further detailed description of this last embodiment of the invention is necessary.

Turning now to the diagrammatic showing of FIGURE 27, there is seen in diagrammatic'plan View a fragment of the interior region of a truck body designated generally as 50 and having sidewalls 51. Within the interior region 52 of the truck is contained a load designated generally as 53 which it is desired to secure against shifting movement by use of the bulkheading material installed pursuant to the novel method all according to the invention. AS shown, two pieces of the bulkheading material 30' are utilized to form the bulkhead, one end of each of the pieces of panelling being adhesively secured respectively to the inside surfaces of the opposite sidewalls 51 of the truck 50 while the free ends are overlapped and their tapes 33 secured with banding seals 37 The use of the panelling 30', shown structurally in detail in the showings of FIGURES 8 through 14, is merely illustrative so that it will be understood that any of the forms of panelling according to the inventions could just as readily be utilized. The panel overlap and securement by means of the banding seals 37 has already been described in connection with the showing of FIG- URES 13 and 14 so that attention may now be directed to the novel method of adhesively securing the panelling to the sidewalls 51 of the truck body 50, details of this method being most clearly seen in the showing of FIG- URE 28 to which reference should be now made.

As seen in FIGURE 28, and by reference back to FIGURE 8 through 11, it is seen that the panelling 30 consists of the main paper web 31', a pair of paper backing strips 32 adhesively secured to the web 31', and a pair of non-metallic tapes 33 sandwiched between the web 31' and backing strips 32 respectively. In this particular form of panelling the windows 35 are cut through the lmain web 31 to expose the t-apes 33' which are spot secured to the backing strips 32. After first cutting the two lengths of panelling 30 and preliminarly positioning these panel lengths to provide the desired overlap for banding seal securement as shown in FIGURE 27, the regions of the truck walls 51 to which the opposite ends ofthe panelling are to be adhesively secured are marked off.

Assuming that the panelling 30 is provided with windows 35 approximately three feet in length as previously described, the ends of the panelling to be adhesively secured will have exposed tapes 33 of eighteen inches in length since these ends will normally also be formed lby cutting through the panelling in the center of a window region 35. With the panelling pieces 30 now ready for installation, the inside wall surfaces of truck walls 51 are liberally coated as at 54 with a contact adhesive, the coated area being sufficiently large to encompass the entire end area of the panelling 30 for the full distance through which the exposed portions of the tape extend. The entire end area of the panelling 30 is now also coated with contact 4adhesive as shown at 55, care being exercised to insure that the exposed tape surfaces are thoroughly coated.

The adhesively coated end of the panelling is now properly positioned in apposition to the adhesively coated part of the wall 51 and the panelling is pressed against the wall 51 so that rthe two adhesive layers 54 and 5S are brought into surface contact with one another to form an integral homogeneous layer as indicated at 54-55. Strong adhesion is obtained by applying pressure against the panelling preferrably with a roller device or by tapping with a mallet particularly along the paper strips 32 to force the tapes 33 strongly against the wall 51.

Any suitable contact adhesive may be utilized in practicing the novel method of adhesive installation as just described provided that it exhibits sufficient strength when subjected to shear under widely varying temperature conditions. An adhesive which has been found to be satisfactory in actual use is a synthetic rubber resin adhesive manufactured 'by Pittsburgh Plate Glass Company, of Pittsburgh, Pennsylvania and marketed by Franklin Container Corporation of Philadelphia, Pennsylvania, under the designation Avigard contact adhesive. This adhesve is usable and effective, by brushing or roller coating the same, at temperatures ranging from minus F. to at least 200 F. above zero. Further it has a shear strength of from two to three thousand pounds per square inch so that the panelling installed as shown in FIGURES 27 vand 2S is able to restrain a load force of approximately one hundred thousand pounds if the tapes 33' are of three-quarter inch width. Restraint forces of this nature are rarely, if ever, required in truck transport or railroad car applications so that in general a considerable safety factor is present,

When the carrier has reached its destination and the load 53 has been removed, if desired, the adhesively secured panelling sections 30 may be removed by peeling backward against the adhesive bond. The peel-back force is effectively exerted against only a line of adhesive at a given instant so that a relatively small instantaneous force is required to effect separation of the panelling sections from the wall portions to which they are secured. The wall sections are of course not in any manner damaged and may be subsequently again coated with adhesive for installation of other barrier panelling sections when such is next desired.

As earlier pointed out, the flexible tapes may be of woven fabric, woven or unwoven plastic or one of the weftless tapes now commercially available. Whatever form of flexible tape is utilized, it is preferred that the tape surface to be adhesively secured be either somewhat porous or textured so that a good bond is effected between the tape and the contact adhesive applied thereto. In the event that it is desired to adhesively secure a longer length of panelling to the support surface, it may be preferred to utilize the type of panelling illustrated in FIG- URES 15 and 2l lwhich are both provided with the perforated strip tear-back feature so that any desired length of tape may be exposed for adhesive securement.

Regardless of which structural embodiment of the invention is ut-ilized in practicing the method of the invention it is observed that the tapes are always spot glued to the paper lamination which is non-apertured or unwindowed and are completely unsecured to the apertured laminate. Consequently, since it is the tape face proximate to the apertured laminate which is adhesivelyvcoated for securement to the supporting structure, it will be appreciated that this tape face is always completely free of anypaper coating which might degrade the strength of the adhesive bond between the tapes and the surface to which the panelling is secured.

Having now described my invention in connecting with particularly illustrated embodiments thereof, it will be appreciated that variations and modifications of my invention may now occur from time to time to those persons normally skilled in the art without departing from the essential spirit or scope of the invention, and accordingly it is intended to claim the same broadly as well as specifically as indicated by the appended claims.

What is claimed to be new and useful is:

1. Reinforced flexible barrier material adapted for use as panelling for constructing bulkheads, partitions and like barrier walls to cover an open space extending between relatively xed sidewalls of a load-confining compartment comprising, `in combination, a paper web of predetermined width but of an indeterminate length substantially exceeding the expanse of said normally open space, a plurality of relatively narrow flat tapes of flexible material of tensile strength greatly exceeding that of the paper web, said tapes extending lin transversely spaced parallel relation to each other and the side edges of said paper web continuously along the full length of and in flatwise engagement with one surface of said paper web,.and a separate paper backing for the tapes coextensive in length with the paper web and adhesively bonded thereto in overlying relation to said tapes whereby the latter are each sandwiched between a pair of bonded-together laminates of web and backing, the laminations of each pair thereof which overlie corresponding surfaces of the tapes being imperforate throughout and detachably bonded to said tapes by glue spots spaced lengthwise of the tapes to normally constitute the latter integrated parts of the panelling while permitting lengths of the tapes to be individually stripped from the panelling without any such tearing through the panelling as to destroy its complete integrity, the other laminates of each pair thereof which overlie the opposite corresponding surfaces of the tapes being unsecured to said tapes and provided with recurring means spaced lengthwise thereof for exposing lengths of the ytapes in the opposite end portions of the panelling for direct adhesive securement of the tapes free of overlying paper ilatwise against the said compartment sidewalls simultaneously as the paper expanse of the panelling extending between the tapes is likewise adhesively secured to said walls.

l 2. Reinforced ilexible barrier material as defined in claim 1 wherein said recurring means serve also to expose and render free of overlying paper those lengths of the tapes which are stripped free of the panelling whereby, when the barrier material is transversely severed, the severed end portions of the paper Iweb may be disposed in overlapped relation and the severed endv portions of 4the tapes may be freely lifted out of the plane of the bar- -rier material substantially free of any overlying paper on either surface of each tape and overlapped for securement together in taut overlying relation to the overlapped portions of the paper web.

3. Reinforced ilex'ible barrier material as defined in claim 1 wherein said paper web constitutes the laminates to which the tapes are detachably bonded.

4. Reinforced flexible barrier material as defined in claim 1 wherein said paper backing constitutes the laminates to which the tapes are detachably bonded.

5. Reinforced ilexible barrier material as dened in claim 1 wherein said recurring means for exposing lengths of the tapes consist of longitudinally spaced elongated openings providing windows through which portions of the tapes may be lifted free of their embracing laminates.

6. Reinforced flexible barrier material as defined in claim 1 wherein said recurring means for exposing lengths of the tapes consist of lune-shaped openings spaced lengthwise of the tapes in transverse relation to a pair of longitudinally extending parallel lines of slits respectively disposed closely adjacent the opposite side edges of each tape.

7. Reinforced flexible barrier material as defined in claim 1 wherein said flexible tapes are of non-metallic material.

8. A method of installing a load restraining barrier across an opening between laterally spaced sidewalls of a load containing enclosure for containment of the load material in said enclosure, which barrier is formed of paper webbing having laterally spaced parallel pairs of laminates respectively sandwiching therebetween relatively narrow ilat tapes of flexible material of tensile strength substantially exceeding that of the paper webbing-said tapes extending in transversely spaced parallel relation to each other and to the longitudinal edges of the webbing with the laminates on one side only of said webbing respectively detachably bonded to the tapes and the laminates on the opposite side of said webbing freely str-ippable from 4said tapes to expose desired lengths thereof free of overlying paper, consisting of the steps of (a) sectionalizing said barrier webbing to provide two sections thereof each of a length sufficient to effect overlap and securement together of the inner portions thereof when the outer portions are applied to the sidewalls of said load containing enclosure and thereby provide a load-securing bulkhead across said opening;

(b) in exposing substantial lengths of said tapes free of overlying paper in the outer portions of said sections of webbing which are respectively applied to said sidewalls while maintaining intact the bond between said tapes and their respective laminates to `which they are detachably bonded;

(c) in exposing lengths of said tapes free of overlying paper in the overlapping inner portions of said sections of webbing and stripping said last-mentioned exposed portions of the tapes from the laminate to which they were bonded to provide freely extending lengths of the tapes in said inner portions of the webbing section;

(d) in applying contact cement over the exposed vtape surfaces and the contiguous surfaces of the webbing throughout entire areas of the outer portions of the two sections of webbing in which the tapes have been surface-exposed while the same remain bonded to -their respective laminates;

(e) in coating with .contact cement the coextensive 'areas of the sidewalls against which the said outer portions of said barrier sections are to be applied respectively;

(f) in applying the cement-coated tape-reinforcedv paper webbing and tapes to the cement-coated surfaces of said sidewalls with pressure sullcient to ellect an adhesive bond therebetween which is so oriented -that the weight of the contained load exerted against the webbing is transmitted to the 'adhesive bond primarily as a shear force coincident with and parallel to the plane of the adhesively secured outer portions of the webbing; and

(g) and in finally securing together the freely extending lengths of tapes at the inner end of one section of the webbing and the corresponding tapes at the inner end of the 'other section in taut relation and with the sections of the webbing'overlapped in the Vregions of securement of said tapes to complete the barrier across the aforesaid opening.

9. A bulkheaded compartment in which a load in transit is contained and restrained against undesired shifting comprising, in combination,

a load-receiving structure having a pair of rigid, laterally-spaced, load-confining side walls, and

a pair of longitudinally alined reinforced ilexible loadrestraining panels extending transversely between said side walls,

said panels being each of equal predetermined width and disposed with their outer end portions respectively inturned to lie llatwise against the inner surfaces of said side walls and with their inner end portions overlapped intermediately of said side walls,

each said panel including a main paper web,

a plurality of relatively narrow ilat tapes of flexible material of tensile strength greatly exceeding that of the paper web extending in spaced parallel relation along the full length of the web in ilatwise engagement with one surface thereof,

separate paper backing adhesively secured to said web disposed in overlying relation to said tapes whereby the latter are each sandwiched between a pair of bonded-together laminates of web and backing, the laminates on that face of each panel which present toward the side wall surfaces aforesaid being unsecured to the tapes and of such shorter length than the tapes as to expose substantial lengths of the latter in said inturned end portion of the panel,

while the'laminates on that face of each panel which presents away from the side wall surfaces are imperforate throughout and detachably bonded to said tapes along the full length of the latter,

whereby all of the exposed portions of the tapes in said outer end portion of the panel and the expanses of paper extending between the exposed tapes are disposed in direct llatwise contact with the inner surface of the side wall with which said panel is associated,

adhesive means for bonding said exposed portions of the tapes and said intervening expanses of paper in the outer inturned end portion of the panel directly to its associated side wall,

means in each of said panels to effect stripping of pre- 11 'l2 determined lengths of the tapes from the inner end References Cited by the Examiner glrstirsngefdtlaminates to which they are det-ach- UNITED STATES PATENTS to free the tapes of their unsecured overlying laminates 21228152* v 1/1941 Pattn 10S-423 X whereby both surfaces of vsaid last-mentioned lengths 5 2,794,761 6/1957 Wllhamson 10S-423 of tape are rendered free of any overlying paper, and 30155604 11/1964- Blatt 10S-369 X means for securing together said paper-free lengths of l tape in taut overlying relation to the overlapped inner ARTHUR L' LA POINT Pr'ma' y Exammer' end portions of said pair of panels. DRAYTON E. HOFFMAN, Examiner.

Claims (1)

1. REINFORCED FLEXIBLE BARRIER MATERIAL ADAPTED FOR USE AS PANELLING FOR CONSTRUCTING BULKHEADS, PARTITIONS AND LIKE BARRIER WALLS TO COVER AN OPEN SPACE EXTENDING BETWEEN RELATIVELY FIXED SIDEWALLS OF A LOAD-CONFINING COMPARTMENT COMPRISING, IN COMBINATION, A PAPER WEB OF PREDETERMINED WIDTH BUT OF AN INDETERMINATE LENGTH SUBSTANTIALLY EXCEEDING THE EXPANSE OF SAID NORMALLY OPEN SPACE, A PLURALITY OF RELATIVELY NARROW FLAT TAPES OF FLEXIBLE MATERIAL OF TNESILE STENGTH GREATLY EXCEEDING THAT OF THE PAPER WEB, SAID TAPES EXTENDING IN TRANSVERSELY SPACED PARALLEL RELATION TO EACH OTHER AND THE SIDE EDGES OF SAID PAPER WEB CONTINUOUSLY ALONG THE FULL LENGTH OF AND IN FLATWISE ENGAGEMENT WITH ONE SURFACE OF SAID PAPER WEB, AND A SEPARATE PAPER BACKING FOR THE TAPERS COEXTENSIVE IN LENGTH WITH THE PAPER WEB AND ADHESIVELY BONDED THERETO IN OVERLYING RELATION TO SAID TAPES WHERBY THE LATTER ARE EACH SANDWICHED BETWEEN A PAIR OF BONDED-TOGETHER LAMINATES OF WEB AND BACKING, THE LAMINATIONS OF EACH PAIR THEREOF WHICH OVERLIE CORRESPONDING SURFACES OF THE TAPES BEING IMPERFORATE THROUGHOUT AND DETACHABLY BONDED TO SAID TAPES BY GLUE SPOTS SPACED LENGTHWISE OF THE TAPES TO NORMALLY CONSTITUTE THE LATTER INTEGRATED PARTS OF THE PANELLING WHILE PERMITTING LENGTHS OF THE TAPES TO BE INDIVIDUALLY STRIPPED FROM THE PANELLING WITHOUT ANY SUCH TEARING THROUGH THE PANELLING AS TO DESTROY ITS COMPLETE INTEGRITY, THE OTHER LAMINATES OF EACH PAIR THEREOF WHICH OVERLIE THE OPPOSITE CORRESPONDING SURFACES OF THE TAPES BEING UNSECURED TO SAID TAPES AND PROVIDED WITH RECURRING MEANS SPACED LENGTHWISE THEREOF FOR EXPOSING LENGTHS OF THE TAPES IN THE OPPOSITE END PORTIONS OF THE PANELLING FOR DIRECT ADHESIVE SECUREMENT OF THE TAPES FREE OF OVERLYING PAPER FLATWISE AGAINST THE SAID COMPARTMENT SIDEWALLS SIMULTANEOUSLY AS THE PAPER EXPANSE OF THE PANELLING EXTENDING BETWEEN THE TAPES IS LIKEWISE ADHESIVELY SECURED TO SAID WALLS.

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